gitlab-ci: Enable environment variable in centos9

Signed-off-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
(cherry picked from commit 4d96c667bc13275abc89e3e03fbe379738cd11ca)

.gitlab-ci.yml

@@ -82,6 +82,7 @@ centos9s/openssl_3.0.x/x86_64:
   image: $CI_REGISTRY/$BUILD_IMAGES_PROJECT:$CENTOS9_BUILD
   extends: .tests
   script:
+    - export OPENSSL_ENABLE_SHA1_SIGNATURES=1
     - cmake3 $CMAKE_OPTIONS .. &&
       make -j$(nproc) &&
       ctest --output-on-failure